Rose Bengal Immobilized on Cellulose Paper for Sustainable Visible‐Light Photocatalysis

Abstract

Abstract This work reports the heterogenization of Rose Bengal dye on simple cellulose paper sheets (Cell‐RB) through copper‐catalyzed azide‐alkyne click ligation. The photocatalytic properties of Cell‐RB under green LED irradiation were evaluated in a series of dehydrogenative transformations for the functionalization of N ‐aryltetrahydroisoquinolines and quinoxalin‐2(1 H )‐ones. The excellent photocatalytic activities observed, associated to the ease of recovery with simple tweezers, highlight the strong assets of Cell‐RB with respect to traditional homogeneous organic photocatalysts.